Reaper

Description:
On his 21st birthday, Sam discovers his parents sold his soul to the devil before birth and he must now be a bounty hunter for the devil until he dies.

Qvamp says:

This show is much more comedy than horror, and demons, damned souls and the Devil are in every episode, though not really scary.

The show includes a gay couple who are revealed to be demons. However, they introduce us to 'good demons' who are trying to get back into heaven. By the end of the show, one member of the gay couple is the only demon to have succeeded.

Interestingly, by doing this the show actually states that gays are not evil at all, and are not against God's will in any way.